diff --git a/packages/client/public/viewer.min.js b/packages/client/public/viewer.min.js
index 08c61cd1..738686ba 100644
--- a/packages/client/public/viewer.min.js
+++ b/packages/client/public/viewer.min.js
@@ -54836,7 +54836,7 @@ LocalFile.prototype.open = function () {
         AuthorInit: function () {
           MathJax.Hub.Config(d);
           MathJax.Hub.Register.StartupHook('Begin', function () {
-            for (var b = 0; b < Editor.mathJaxQueue.length; b++) Editor.doMathJaxRender(Editor.mathJaxQueue[b]);
+            for (var b = 0; b < (Editor.mathJaxQueue || []).length; b++) Editor.doMathJaxRender(Editor.mathJaxQueue[b]);
           });
         },
       };